Machine or other vise



1.A H. IERRIM. MACHINE OR OTHER VISE.

APPLICATION FILED IUNEZG, I9l9. 15849963, Patented Aug. 17, 1920.

'I uw @i3 l ull UNITED STATES JAMES HENRY JERRIM, 0F BROMSGROVE,ENGLAND.

MACHINE OR OTHER VISE.

To all lwhom t may concern:

Be it known that I, JAMES HENRY JER- RIM, subject of the King ofGreat-Britain, residing at the Oaklands, Bromsgrove, lVorcester,England, have invented certain new and useful Improvements in Machinesor other Vises, of which the following is a specification.

The invention refers to machine or other j justed position.

In the drawing:

Figure l is a perspective view of theimproved machine vise.

Fig. 2 is a plan thereof.

Fig. 3 is an elevation of the `left hand portion of Fig. 1 with one ofthe adjustable jaw elements shown in section.

Fig'. 4 is a cross section online 4 4 of Fig. 2 looking toward the leftand with one element partly broken away.

In the |illustrated embodiment a is the casting or body and b themovable jaw which slides on the raised portions c of the body and israpidly adjustable by the claw or pawl d on the rack teeth e and closelyadjustable by the screw f passing through the claw or pawl. So far thede-y vice follows on lines well known in the art. The other jaw of thevise is comprised of two pivotal elements g and 71, each having a collaror boss j and a stud or pin c received'in apertures in the raisedportion or platform m of the body. Part of the stud or pin is plain sothat each element g and z, may be pivoted in the body while theextremity of each pin is screw threaded and has a threaded washer n andlock nut o screwed thereon. The washer and nut are set so thatfrictional engagement with the underside of the platform m prevents toofree movements of the element g or 7c but intended adjustment ispermitted. Each element g and It has a beveled or conical surface on itscollar or boss and in the space between the two elements a stud orpillar is secured, and on this stud a conical clamping member p isarranged and is adapted to be forced into engagement with the bevcledsurfaces of both elements by a clamp- Specication of Letters Patent.

Application filed .T une 26,

Patented Aug. 17, 1920. i919. serial No. 306,971.`

ing nut g working in a screw thread on the end of the stud.

The elements g and it may thus be set so that their gripping faces areat any desired angle to each other and they may be locked in tthisposition by turning the clamping nu g. f

The gripping parts of the elements g and z and of the movable jaw b, mayhave a beveled face on which corresponding jaw plates r are secured, sothat under pressure the plates tend to close down slightly and thuscounteract the usual tendency of the work to rise or squeeze out of thejaws if 1 t is of a curved or irregular contour. The jaw plates r` may.be securedby screws s with springs t around the screws so that theplate'is held by spring pressure, and the screws pass through slots upermitting I novement to take place with the above object. The space inthe jaw for the screws s to work in may be closed by plugs v to preventthe entry of dust, swarf, 0r the like.

Vhat I claim is l. In vises and work holding appliances, in combinationwith a body and a jaw thereon, a plurality of pivotal gripping elementsopposite said jaw, said elements being adjustable around their pivots,anda clampthereon, a plurality of pivotal elements opposite said jaw,said elements being' adjustable iii relation to each other and said jaw,said elements each having a concentric bevel surface, and a conicalclamping means disposed between said elements in a position to engagesaid bevel surfaces,` and simultaneously lock said elements in adjustedposition. A

3. In vises and work holding appliances, the combination of a body, ajaw movable thereon, a platform on said body, a pair of elements onvertical pivots in said platform, said elements being independentlyadjustable about said pivots, a rigid collar on each element, saidcollar having a conical face, a conical stud between said elements forsimultaneously engaging said collars and locking both elements inadjusted position.

4. A machine vise comprising in combination a body, a platform thereon,a mov EIO able jaw, means for rapidly setting said aw in relation tosaid body, means for finely adjusting said jaw, a pair of elementsmounted on said platform on pivots parallel to the said jaw, grippingfaces on said elements and said jaw, a conical collar on each elementand a conical clamping member between said elements located so as toengage the conical collar of each.

5. A machine vise comprising in combination a body, a platform thereon,a movable jaw, means for rapidly setting said jaw in relation to saidbody, means for finely adjusting said jaw, a pair of elements mounted onsaid platform on pivots parallel to the said jaw, gripping faces on saidelements and said jaw, said faces each having an inclined surfaceengaging an incline on the jaw or the element as the case may be, screwsin said faces passing through slots in said jaw or element, springsaround said screws to draw said faces against the element or jaw, aconical collar on each element and a conical clamping member betweensaid elements located so as to engage the conical collar of each.

In testimony whereof I affix my signature.

JAMES HENRY JERRIM.

